--- typo3/classes/class.typo3ajax.php	Tue Apr 17 11:33:22 2012
+++ typo3/classes/class.typo3ajax.php	Fri Jul 13 11:13:55 2012
@@ -279,2 +278,5 @@
 		$content = json_encode($this->content);
+		if(!$content) {
+			$content = __json_encode($this->content);
+		}
 
@@ -313,2 +315,64 @@
 }
+
+function __json_encode( $data ) {
+	if( is_array($data) || is_object($data) ) {
+		$islist = is_array($data) && ( empty($data) || array_keys($data) === range(0,count($data)-1) );
+
+		if( $islist ) {
+		$json = '[' . implode(',', array_map('__json_encode', $data) ) . ']';
+		} else {
+		$items = Array();
+		foreach( $data as $key => $value ) {
+			$items[] = __json_encode("$key") . ':' . __json_encode($value);
+		}
+		$json = '{' . implode(',', $items) . '}';
+		}
+	} elseif( is_string($data) ) {
+		# Escape non-printable or Non-ASCII characters.
+		# I also put the \\ character first, as suggested in comments on the 'addclashes' page.
+		$string = '"' . addcslashes($data, "\\\"\n\r\t/" . chr(8) . chr(12)) . '"';
+		$json    = '';
+		$len    = strlen($string);
+		# Convert UTF-8 to Hexadecimal Codepoints.
+		for( $i = 0; $i < $len; $i++ ) {
+		$char = $string[$i];
+		$c1 = ord($char);
+
+		# Single byte;
+		if( $c1 <128 ) {
+			$json .= ($c1 > 31) ? $char : sprintf("\\u%04x", $c1);
+			continue;
+		}
+
+		# Double byte
+		$c2 = ord($string[++$i]);
+		if ( ($c1 & 32) === 0 ) {
+			$json .= sprintf("\\u%04x", ($c1 - 192) * 64 + $c2 - 128);
+			continue;
+		}
+
+		# Triple
+		$c3 = ord($string[++$i]);
+		if( ($c1 & 16) === 0 ) {
+			$json .= sprintf("\\u%04x", (($c1 - 224) <<12) + (($c2 - 128) << 6) + ($c3 - 128));
+			continue;
+		}
+
+		# Quadruple
+		$c4 = ord($string[++$i]);
+		if( ($c1 & 8 ) === 0 ) {
+			$u = (($c1 & 15) << 2) + (($c2>>4) & 3) - 1;
+
+			$w1 = (54<<10) + ($u<<6) + (($c2 & 15) << 2) + (($c3>>4) & 3);
+			$w2 = (55<<10) + (($c3 & 15)<<6) + ($c4-128);
+			$json .= sprintf("\\u%04x\\u%04x", $w1, $w2);
+		}
+		}
+	} else {
+		# int, floats, bools, null
+		$json = strtolower(var_export( $data, true ));
+	}
+	return $json;
+}
+